Added scripts to read UNB2 loc. POLs

Added 2 scripts, copied from JTAG project, to read out the power supplies of a single FPGA, known as local point of load (POL)

UniBoard2_I2C.py

+
+EEPROM_I2C_ADDR = 0x50 #"1010000"
+
+
+
+LOC_POWER_CORE = 0x01 #"0000001" # 0x01
+LOC_POWER_ERAM = 0x0D #"0001101" # 0x0D
+LOC_POWER_TR_R = 0x0E #"0001110" # 0x0E
+LOC_POWER_TR_T = 0x0F #"0001111" # 0x0F
+LOC_POWER_BAT  = 0x10 #"0010000" # 0x10
+LOC_POWER_IO   = 0x11 #"0010001" # 0x11
+LOC_POWER_SUPPLIES = [LOC_POWER_CORE,LOC_POWER_ERAM,LOC_POWER_TR_R,LOC_POWER_TR_T,LOC_POWER_BAT,LOC_POWER_IO]
+
+
+SWI_POWER_CORE  = 0x0F #"0001111" # 0x0F
+SWI_POWER_IO    = 0x0E #"0001110" # 0x0E
+CLK_PWR         = 0x0D #"000000D" # 0x00
+QSFP_BOT_PWR    = 0x50 #"0000002" # 0x02
+BRICK_PWR       = 0x2c #"0000002" # 0x02
+
+LP_VOUT_MODE = 0x20
+LP_VOUT = 0x8B # 
+LP_temp = 0x8D # 
+LP_IOUT = 0x8C
+
+QSFP_I2C_ADDR = 0x50 #"1010000"
+QSFP_TEMP = 0x16 #"00010110"  # (Byte1*256+Byte2)/256
+QSFP_VOLT = 0x1A #"00011010"  # (Byte1*256+Byte2)*0.0001
+
+ETH_TEMP_I2C_ADDR   = 0x4C #"1001100" # 0x29
+
+ETH_LOC_TEMP        = 0x00 #"00000000"
+ETH_TEMP            = 0x01 #"00000001"
+
+MB_I_TEMP_I2C_ADDR = 0x18
+MB_II_TEMP_I2C_ADDR = 0x19
+MB_I_EEPROM = 0x50
+MB_II_EEPROM = 0x51
+MB_TEMP_REG = 0x05 # 5  #(Byte1*256+Byte2)*0.0625
+MB_DATE = 0x143
+MB_DATE_bytes = 2
+MB_TYPE_NR = 0x149
+MB_TYPE_NR_bytes = 20
+
+PWR_CLK_I2C_ADDR    = "0001101"  # 0x0D
+PWR_S3V3_I2C_ADDR   = "0001110"  # 0x0E
+PWR_S1V2_I2C_ADDR   = "0001111"  # 0x0E
+
+
+######################
+# Functions
+######################
+
+# Calculate floating point value according PMBus lineair
+def calc_lin_2bytes(data):
+    expo = ((data[1] & 0xf8)>>3) 
+    if expo > 2**4:
+        expo = expo-2**5
+    mantisse = (data[1] & 0x7)*0x100 + data[0]
+    output = mantisse * 2**expo
+    return output
+
+# Calculate floating point value according PMBus lineair
+def calc_lin_3bytes(data,mode):
+    expo = (mode[0] & 0x1F) 
+    if expo > 2**4:
+        expo = expo - 2**5
+    output = (data[1]*256 + data[0]) * 2**expo
+    return output
+ 

UniBoard2_Read_LOC_PWR.py

+#******************************************#
+# Application: JFT_1
+# Created: 2015-05-21, 09:14:44
+#******************************************#
+
+#******************************************#
+# Imports
+#******************************************#
+# Write your Imports here.
+
+import sys
+import time
+sys.path.insert(0,'.')
+import os
+if os.name =="posix":
+    from I2C_serial_pi import *
+else:
+    from I2C_serial import *
+
+from UniBoard2_I2C import *
+I2CBUSNR=1
+
+
+LOC_PWR = I2C(LOC_POWER_SUPPLIES[0])
+LOC_PWR.bus = I2CBUSNR
+ret_ack, ret_value = LOC_PWR.read_bytes(0)
+if  ret_ack < 1:
+    print("no device found")
+else:
+    pr_stri = "Found device at address 0x{:02x}".format(LOC_PWR.I2C_Address)
+    print(pr_stri)
+    value=[]
+    ret_ack,vout_mod = LOC_PWR.read_bytes(LP_VOUT_MODE, 1)
+    ret_ack,ret_value = LOC_PWR.read_bytes(LP_VOUT, 2)
+    vout = calc_lin_3bytes(ret_value, vout_mod)
+    print("vout = ", vout)
+    ret_ack,ret_value = LOC_PWR.read_bytes(LP_IOUT, 2)
+    iout = calc_lin_2bytes(ret_value)
+    print("Output Current :",iout)
+    ret_ack,ret_value = LOC_PWR.read_bytes(LP_temp, 2)
+    temp = calc_lin_2bytes(ret_value)
+    print("temperature :",temp)